diff options
| -rw-r--r-- | bin/gfxx.c | 76 |
1 files changed, 43 insertions, 33 deletions
diff --git a/bin/gfxx.c b/bin/gfxx.c index 2f23d5da..c2d23793 100644 --- a/bin/gfxx.c +++ b/bin/gfxx.c @@ -36,14 +36,18 @@ static enum { COLOR_RGB, COLOR__MAX, } space = COLOR_RGB; +static const char *COLOR__STR[COLOR__MAX] = { "indexed", "grayscale", "rgb" }; static uint32_t palette[256]; + static enum { ENDIAN_LITTLE, ENDIAN_BIG, } byteOrder, bitOrder; + +enum { PAD, R, G, B }; static uint8_t bits[4] = { 8, 8, 8, 8 }; -#define BITS_COLOR (bits[1] + bits[2] + bits[3]) -#define BITS_TOTAL (bits[0] + BITS_COLOR) +#define BITS_COLOR (bits[R] + bits[G] + bits[B]) +#define BITS_TOTAL (bits[PAD] + BITS_COLOR) static size_t offset; static size_t width = 16; @@ -54,7 +58,7 @@ static size_t scale = 1; static size_t size; static uint8_t *data; -extern int init(int argc, char *argv[]) { +int init(int argc, char *argv[]) { const char *pal = NULL; const char *path = NULL; @@ -80,10 +84,9 @@ extern int init(int argc, char *argv[]) { } break; case 'b': { if (strlen(optarg) < 4) return EX_USAGE; - bits[0] = optarg[0] - '0'; - bits[1] = optarg[1] - '0'; - bits[2] = optarg[2] - '0'; - bits[3] = optarg[3] - '0'; + for (int i = 0; i < 4; ++i) { + bits[i] = optarg[i] - '0'; + } } break; case 'n': offset = strtoul(optarg, NULL, 0); break; case 'f': flip ^= true; break; @@ -99,8 +102,10 @@ extern int init(int argc, char *argv[]) { if (pal) { FILE *file = fopen(pal, "r"); if (!file) err(EX_NOINPUT, "%s", pal); + fread(palette, 4, 256, file); if (ferror(file)) err(EX_IOERR, "%s", pal); + int error = fclose(file); if (error) err(EX_IOERR, "%s", pal); } @@ -121,6 +126,7 @@ extern int init(int argc, char *argv[]) { size = 1024 * 1024; data = malloc(size); if (!data) err(EX_OSERR, "malloc(%zu)", size); + size = fread(data, 1, size, stdin); if (ferror(stdin)) err(EX_IOERR, "stdin"); } @@ -129,17 +135,15 @@ extern int init(int argc, char *argv[]) { } static char options[128]; - -static const char *SPACE_STR[COLOR__MAX] = { "indexed", "grayscale", "rgb" }; static void formatOptions(void) { snprintf( options, sizeof(options), "gfxx -c %s -e%c -E%c -b %c%c%c%c -n %#zx %s%s-w %zu -z %zu", - SPACE_STR[space], + COLOR__STR[space], "lb"[byteOrder], "lb"[bitOrder], - bits[0] + '0', bits[1] + '0', bits[2] + '0', bits[3] + '0', + bits[PAD] + '0', bits[R] + '0', bits[G] + '0', bits[B] + '0', offset, flip ? "-f " : "", mirror ? "-m " : "", @@ -148,7 +152,7 @@ static void formatOptions(void) { ); } -extern const char *status(void) { +const char *status(void) { formatOptions(); return options; } @@ -200,17 +204,17 @@ static bool nextY(struct Iter *it) { } static bool next(struct Iter *it) { - return (nextX(it) ? true : nextY(it)); + return nextX(it) || nextY(it); } -static void put(const struct Iter *it, uint32_t p) { +static void put(const struct Iter *it, uint32_t pixel) { size_t scaledX = it->x * scale; size_t scaledY = it->y * scale; for (size_t fillY = scaledY; fillY < scaledY + scale; ++fillY) { if (fillY >= it->bufHeight) break; for (size_t fillX = scaledX; fillX < scaledX + scale; ++fillX) { if (fillX >= it->bufWidth) break; - it->buf[fillY * it->bufWidth + fillX] = p; + it->buf[fillY * it->bufWidth + fillX] = pixel; } } } @@ -221,18 +225,18 @@ static uint8_t interp(uint8_t b, uint32_t n) { return n * MASK(8) / MASK(b); } -static uint32_t interpolate(uint32_t n) { +static uint32_t interpolate(uint32_t rgb) { uint32_t r, g, b; if (bitOrder == ENDIAN_LITTLE) { - b = n & MASK(bits[3]); - g = (n >>= bits[3]) & MASK(bits[2]); - r = (n >>= bits[2]) & MASK(bits[1]); + b = rgb & MASK(bits[B]); + g = (rgb >>= bits[B]) & MASK(bits[G]); + r = (rgb >>= bits[G]) & MASK(bits[R]); } else { - r = n & MASK(bits[1]); - g = (n >>= bits[1]) & MASK(bits[2]); - b = (n >>= bits[2]) & MASK(bits[3]); + r = rgb & MASK(bits[R]); + g = (rgb >>= bits[R]) & MASK(bits[G]); + b = (rgb >>= bits[G]) & MASK(bits[B]); } - return RGB(interp(bits[1], r), interp(bits[2], g), interp(bits[3], b)); + return RGB(interp(bits[R], r), interp(bits[G], g), interp(bits[B], b)); } static void drawBits(struct Iter *it) { @@ -244,6 +248,7 @@ static void drawBits(struct Iter *it) { } else { n = data[i] >> b & MASK(BITS_TOTAL); } + if (space == COLOR_INDEXED) { put(it, palette[n]); } else if (space == COLOR_GRAYSCALE) { @@ -251,6 +256,7 @@ static void drawBits(struct Iter *it) { } else if (space == COLOR_RGB) { put(it, interpolate(n)); } + if (!next(it)) return; } } @@ -264,6 +270,7 @@ static void drawBytes(struct Iter *it) { n <<= 8; n |= (byteOrder == ENDIAN_BIG) ? data[i+b] : data[i+bytes-b-1]; } + if (space == COLOR_INDEXED) { put(it, palette[n & 0xFF]); } else if (space == COLOR_GRAYSCALE) { @@ -271,11 +278,12 @@ static void drawBytes(struct Iter *it) { } else if (space == COLOR_RGB) { put(it, interpolate(n)); } + if (!next(it)) return; } } -extern void draw(uint32_t *buf, size_t bufWidth, size_t bufHeight) { +void draw(uint32_t *buf, size_t bufWidth, size_t bufHeight) { memset(buf, 0, 4 * bufWidth * bufHeight); struct Iter it = iter(buf, bufWidth, bufHeight); if (BITS_TOTAL >= 8) { @@ -286,7 +294,6 @@ extern void draw(uint32_t *buf, size_t bufWidth, size_t bufHeight) { } static char fileName[FILENAME_MAX]; - static void formatName(const char *ext) { snprintf( fileName, @@ -295,7 +302,7 @@ static void formatName(const char *ext) { "igr"[space], "lb"[byteOrder], "lb"[bitOrder], - bits[0] + '0', bits[1] + '0', bits[2] + '0', bits[3] + '0', + bits[PAD] + '0', bits[R] + '0', bits[G] + '0', bits[B] + '0', offset, "xf"[flip], "xm"[mirror], @@ -315,17 +322,19 @@ static void palSample(void) { static void palDump(void) { formatName("dat"); FILE *file = fopen(fileName, "w"); - if (!file) { warn("%s", fileName); return; } + if (!file) err(EX_CANTCREAT, "%s", fileName); + size_t count = fwrite(palette, 4, 256, file); - if (count != 256) { warn("%s", fileName); return; } + if (count != 256) err(EX_IOERR, "%s", fileName); + int error = fclose(file); - if (error) { warn("%s", fileName); return; } + if (error) err(EX_IOERR, "%s", fileName); } static uint8_t bit = 0; static void setBit(char in) { bits[bit++] = in - '0'; - bit &= MASK(2); + bit &= 3; } static const uint8_t PRESETS[][4] = { @@ -340,15 +349,16 @@ static const uint8_t PRESETS[][4] = { { 8, 8, 8, 8 }, }; #define PRESETS_LEN (sizeof(PRESETS) / sizeof(PRESETS[0])) + static uint8_t preset = PRESETS_LEN - 1; static void setPreset(void) { - bit = 0; for (int i = 0; i < 4; ++i) { bits[i] = PRESETS[preset][i]; } + bit = 0; } -extern bool input(char in) { +bool input(char in) { size_t pixel = (BITS_TOTAL + 7) / 8; size_t row = width * pixel; switch (in) { @@ -373,7 +383,7 @@ extern bool input(char in) { break; case '.': width++; break; case ',': if (width > 1) width--; break; case '>': width *= 2; - break; case '<': if (width / 2 >= 1) width /= 2; + break; case '<': if (width > 1) width /= 2; break; case 'f': flip ^= true; break; case 'm': mirror ^= true; break; case '+': scale++; |